Coating composition for producing a two-colored patterned effect



United States Patent COATING COMPOSITION FOR PRODUCING A TWO-COLORED PATTERNED EFFECT Arthur Jud, Oberengstringen, Zurich, Switzerland, sihgnlor of one-half to Jean Spillmann, Zurich, Switzer- No Drawing. Application February 17, 1953, Serial No. 337,423

Claims priority, application Switzerland February, 1952 4 Claims. (Cl. 260-9) The present invention relates to a method for producing and finishing in one operation two-coloured wallpaperlike coatings on any primed surface or on another suitable grounding, and to coating material for carrying out this method.

As is well known, two or more colours each of them having a different colour-carrier do not readily mingle with each other, or may be mixed only under difliculties. Nevertheless, it was hitherto hardly possible to apply such a coating material containing two or more colour-tones in one operation to the grounding to be treated in such manner as to prevent the different colours from running into one another; at any rate the coating could hardly be applied by means of a brush. In practice therefore it was impossible to produce this type of surface coatings, particularly on vertical surfaces, such as for instance room walls, with a neat, uniform and stainless appearance.

Furthermore, the production of wallpaper-like patterns or ornaments on walls or other surfaces was hitherto very cumbersome and time-consuming, since the various colour-tones and patterns had to be applied individually and thus in several operations. Moreover, it was hardly possible to achieve a paperand wallpaper-like appearance.

It is an object of the present invention to provide a method, which eliminates all the mentioned drawbacks. Due to the composition of the coating material according to the invention, the new and improved method makes it possible to produce in one operation on primed or pretreated surfaces or on any other suitable grounding a wallpaper-like coating patterned in two colours with an appearance similar to paper. This coating is particularly suited for walls of rooms, but also for any other articles made of wood, gypsum, masonry, pavatex, and paper which are suitably primed or grounded, or even glass and the like.

The method according to the invention consists in applying a coating material containing two differently coloured colour carriers which themselves are not miscible with each other to the surface to be coloured, one of said colour carriers being of aqueous and the other of non-aqueous nature, and the aqueous colour-carrier containing cellulose-containing fibre materials, such as e. g. cellulose pulp, wood pulp, lignin, straw pulp, sulphite and sulphate cellulose, together with weighting agents such as chalk, gypsum, sulphate of barium, kaolin, or other suitable clays, spars and earths. The two colourcarriers of the coating material also contain body colour for obtaining the desired colour tone.

When such a coating material is applied on the priming layer, by means of a brush, a roller, a spray gun or any other known paint applying tool, then the non-aqueous colour-carriers spreads over and uniformly covers the primed ground, while the aqueous colour-carrier refusingly separates, whereby the raw materials of the paper and papier-mach industry added to this colour-carrier 2,795,562 Patented June 11, 1957 are deposited on the surface in specks or spots like little ice 'islands. The painting has a wallpaper-like appearance,

1 1 11 implements suited for this p p after the coating has dried.

Acertain patterning effect is alreadyattained by the kind of implement used for painting. The patterning varies, depending on the coating being applied by means of a brush, 'roller' or spray gun. Moreover, particular patterns may also be obtained by subsequently treating the raw materialsof the paper and papier-mach industry, deposited to the surface of the coat, by means of rubber dabs, dabbing brushes, paper or rubber pads, rollers or Consequently, in a single operation bicoloured surfaces of an extraordinary variety with respect to patterning may be produced.

As non-aqueous colour-carriers there may be used nonaqueous, volatile binders such as alcoholic lacquer, cellulose lacquer, synthetic resin lacquer, or other suitable varnish and non-aqueous, non-volatile binders such as linseed oil, stand oil, blown oils or other drying oils, to which may be added raw materials of the paper and papier-mach industry, colours and substrates, preferably in the following proportion:

1 part by weight of linseed oil 1 part by weight of linseed oil stand oil 3 parts by weight of turpentine 4 parts by weight of kaolin 8 parts by weight of zinc-oxide 3 parts by weight of cellulose fibres As aqueous colour-carriers there are suited preferably cellulose sizing dissolved in water, casein, or other glues soluble in water, furthermore binders of mineral nature such as e. g. lime, water glass etc. to which are added raw materials of the paper and papier-mach industry, colours and substrates. Preferably, water-soluble cellulose sizing in combination with a synthetic resin binder is employed, for instance in the following proportion:

1 part by weight of cellulose sizing (cellulose ether) 1 part by weight of cellulose fibres (wood or paper fibres) 2 parts by weight of sulphate of barium 12 parts by weight of water 3 parts by weight of synthetic resin emulsion free from oil.

The amount of body colour required for obtaining the desired colour tones is added to the colour-carriers in order to attain a two-colour colouration of the surface coating.

The two above mentioned components are mixed together in suitable proportions, preferably as follows:

5 parts by weight of the non-aqueous component plus 6 parts by weight of the aqueous component.

The aqueous component is poured into the non-aqueous component and the whole stirred with a slowly turning stirrer so that both components are reduced to small non-coherent particles and a uniform distribution is obtained. This material alters its structure as soon as it is applied on the surface in that the non-aqueous particles separate from the aqueous particles and coalesce to form a continuous covering film on the treated surface, whereas the aqueous particles deposit on said film in form of non-coherent islands between which islands the continuous film rests still visible.

After drying of the coating, a wallpaper-like nonglossy two-tone cover is obtained. It is to be noted that the coating of the invention may be applied without difliculties on vertical walls.

I claim:

1. A coating material for protiucing two-colored, pat: I

terned surface coating comprising; an aqueous color carrier comprising abindingage'ntand a cellulosiefibremnd an immiscible, non-aqueous colorcari'ier and-cellulosic 5 stantially five parts, by weight; of non-aqueousco1orlcar rier to six parts by. weight of aqueous color carrier;

3. A material "as claimedriniclaim 2 wlvereinithe nonaqueous colortandem-comprisesby weight,- substantially one part of linseedxoil, "one part ofzstand oil' ibree parts of= turpentine,= four parts kaolin, i.eightnparts'1:o'f zine o'xide, and three partsiof'cellulose -fibres 1 4. A material as claimed; in1claitn 3 whereinrth aque 1115 nus color, carrier comprises, by weight, one part of cel-.

References Cited int-he fileof this patent I UNITED STATES PATENTS 2,292,118 Guhl ;Aug. 4,1942 25 91,904 1 Zola A us -.1952 2,658,002 Schwefsky Nov. 3, 1 953 FOREIGN PATENTS, 182,163 Great Britain June 19, 1922 $628,131 

1. A COATING MATERIAL FOR PRODUCING TWO-COLORED, PATTERNED SURFACE COATING COMPRISING: AN AQUEOUS COLOR CARRIER COMPRISING A BINDING AGENT AND A CELLULOSIC FIBRE AND AN IMMISCIBLE, NON-AQUEOUS COLOR CARRIER AND CELLULOSIC FIBRES THEREIN. 